A spacecraft has captured incredibly detailed images of Mercury during a close flyby. BepiColombo, a joint ESA-JAXA mission, ...

During its flyby, Parker will be moving fast enough ... although short of a supersonic threshold in the vicinity of four solar radii, where the solar wind is thought to reach the speed of sound.

The speedy flyby will make the probe the fastest human ... than the sun’s surface and what drives the solar wind, the supersonic stream of charged particles constantly blasting away from the ...